阅读说明：本技术 一种旋转喷头 (Rotary spray head ) 是由 陈灵军 于 2020-07-15 设计创作，主要内容包括：本发明属于旋转喷头技术领域,特指一种旋转喷头,包括旋转轴、旋转头、外壳以及连接螺母,旋转轴的中部设置有阻尼环体,旋转轴上设置有油封,外壳内腔在两油封之间形成储油容腔,外壳的外壁面上沿其周向均布有扶正翅片,扶正翅片与外壳为一体式结构,外壳的外壁面上开设有注油孔,注油孔上连接有堵头。本发明将扶正翅片直接设置在外壳上,省去了扶正器结构,并且扶正翅片与外壳为一体式结构、不可拆卸,从而无需再对扶正翅片进行装配,有效简化了零部件数量,提高装配效率；同时,本发明直接在外壳上开设一注油孔,可便于对阻尼油进行加注或更换,其不仅减小了装配的操作难度,同时后期维护也无需再进行拆卸。(The invention belongs to the technical field of rotary spray heads, and particularly relates to a rotary spray head which comprises a rotary shaft, a rotary head, a shell and a connecting nut, wherein a damping ring body is arranged in the middle of the rotary shaft, an oil seal is arranged on the rotary shaft, an oil storage cavity is formed in an inner cavity of the shell between the two oil seals, righting fins are uniformly distributed on the outer wall surface of the shell along the circumferential direction of the outer wall surface, the righting fins and the shell are of an integrated structure, an oil filling hole is formed in the outer wall surface of the shell, and a plug. According to the invention, the centering fins are directly arranged on the shell, so that the structure of a centering device is omitted, and the centering fins and the shell are of an integrated structure and cannot be disassembled, so that the centering fins do not need to be assembled, the number of parts is effectively simplified, and the assembly efficiency is improved; meanwhile, the oil injection hole is directly formed in the shell, so that damping oil can be conveniently injected or replaced, the operation difficulty of assembly is reduced, and meanwhile, the oil injection hole does not need to be disassembled after later maintenance.)

1. The utility model provides a rotary sprayer, includes hollow rotation axis (1), connect rotating head (2) at rotation axis (1) front end, suit shell (3) in rotation axis (1) periphery, and fix coupling nut (4) at shell (3) rear end, the middle part of rotation axis (1) is provided with damping ring body (5), be located and be provided with oil blanket (6) on rotation axis (1) of damping ring body (5) both sides, shell (3) inner chamber forms one and fills the oil storage that has damping oil and holds the chamber between two oil blankets (6), its characterized in that: the outer wall of shell (3) is gone up and is had a plurality of and along righting fin (7) of shell (3) radial setting along its circumference equipartition, rights fin (7) and shell (3) formula structure as an organic whole, sets up oil filler point (8) that intercommunication oil storage held the chamber on the outer wall of shell (3), can dismantle on oil filler point (8) and be connected with the end cap.

2. A rotary spray head according to claim 1, wherein: the oil storage cavity and the rotary shafts (1) on the two sides of the damping ring body (5) are rotatably connected with the shell (3) through bearings (9), oil filling gaps are reserved between the two side faces of the damping ring body (5) and the corresponding bearings (9), an inner port of the oil filling hole (8) is communicated with one of the oil filling gaps, and an oil through hole (10) penetrating through the front side face and the rear side face of the damping ring body (5) is formed in the damping ring body (5).

3. A rotary spray head according to claim 1 or claim 2, wherein: spiral groove (11) have been seted up on the outer peripheral face of damping ring body (5), the inner port of oil filler point (8) is located the front end portion or the rear end portion of spiral groove (11), and the groove depth degree of spiral groove (11) reduces along keeping away from oil filler point (8) direction gradually, and drives damping ring body (5) and spiral groove (11) rotation by rotation axis (1), flows to rear end portion or front end portion from the front end portion or the rear end portion of spiral groove (11) with the guide damping oil.

4. A rotary spray head according to claim 1, wherein: offer seal groove (12) that are linked together with the hole of rotation axis (1) on the rear end face of rotation axis (1), be fixed with seal ring seat one (13) that have the hole in seal groove (12) in the peripheral direction, offer mounting groove (14) that are linked together with the hole of coupling nut (4) on the preceding terminal surface of coupling nut (4), be fixed with seal ring seat two (15) that have the hole in mounting groove (14) in the peripheral direction, the rear end face of seal ring seat one (13) and the preceding terminal surface laminating of seal ring seat two (15) form and move seal structure mutually, be provided with between seal ring seat one (13) and seal groove (12) or/and seal ring seat two (15) and mounting groove (14) elastic gasket (16).

5. The rotary spray head of claim 4, wherein: the first sealing ring seat (13) and the second sealing ring seat (15) are both made of silicon carbide.

6. The rotary spray head of claim 4, wherein: lie in offer on rotation axis (1) rear end face of seal groove (12) notch department and be irregular shape's circumference constant head tank (17), be provided with on seal ring seat (13) lie in circumference constant head tank (17) and with protruding along one (18) of circumference constant head tank (17) looks adaptation, be located offer on the connecting nut (4) of mounting groove (14) notch department and be irregular shape's circumference constant head tank two (19), be provided with on seal ring seat two (15) lie in circumference constant head tank two (19) and with protruding along two (20) of circumference constant head tank two (19) looks adaptation.

7. The rotary spray head of claim 4, wherein: and sealing rings (21) are arranged between the outer side wall of the first sealing ring seat (13) and the inner side wall of the sealing groove (12) and between the outer side wall of the second sealing ring seat (15) and the inner side wall of the mounting groove (14).

8. A rotary spray head according to claim 1, wherein: the rotating head (2) comprises a rotating base body (22) fixedly connected with the rotating shaft (1) and a shunting base body (23) arranged on the inner cavity of the rotating base body (22), a plurality of first injection holes (24) and second injection holes (25) with different inclination angles from the first injection holes (24) are uniformly distributed on the outer side wall of the rotating base body (22) along the circumferential direction, a first water passing chamber (26) communicated with the first injection holes (24) and a second water passing chamber (27) communicated with the second injection holes (25) are formed between the rotating base body (22) and the shunting base body (23), a shunting groove (28) communicated with an inner hole of the rotating shaft (1) is formed in the rear end face of the shunting base body (23), the bottom surface of the diversion trench (28) is provided with a plurality of first water through holes (29) with water outlet ports communicated with the first water passing chamber (26) and second water through holes (30) with water outlet ports communicated with the second water passing chamber (27).

9. A rotary spray head according to claim 8, wherein: the water inlet ports of the first water through holes (29) and the second water through holes (30) are alternately distributed on the circumference with the center of the bottom surface of the diversion groove (28) as the center of a circle at equal intervals, a switching body (31) capable of sliding back and forth and rotating circumferentially is arranged in the diversion groove (28), a return spring (32) is arranged between the switching body (31) and the bottom surface of the diversion groove (28), the switching body (31) is provided with drainage holes (33) penetrating through the front end surface and the rear end surface of the switching body and corresponds to the number and the positions of the first water through holes (29), the front end surface of the switching body (31) is provided with plunger heads (34) corresponding to the number and the positions of the second water through holes (30), and when the drainage holes (33) are communicated with the first water through holes (29) or the second water through holes (30), the plunger heads (34) are blocked on the second water through holes (30) or the first water through holes (29.

10. A rotary spray head according to claim 9 wherein: switch and seted up circumference swivelling chute (35) on the periphery wall of body (31), circumference swivelling chute (35) are located switching body (31) rear end face water inlet end portion (36), the port is located switching body (31) preceding terminal surface on play water tip (37) and the kink (38) of intercommunication water inlet end portion (36) and play water tip (37), high-pressure rivers flow through water inlet end portion (36) in proper order, kink (38) and play water tip (37) and exert effort in order to drive switching body (31) circumferential direction to kink (38).

The technical field is as follows:

the invention belongs to the technical field of rotary nozzles, and particularly relates to a rotary nozzle.

Background art:

the pipeline cleaning spray head is a high-pressure water jet cleaning product developed and manufactured for cleaning sewers and other industrial pipelines, and is changed from the original single high-pressure water washing into a structure which can rotate automatically under the reaction force of water pressure.

A self-rotating spray head disclosed by the prior Chinese utility model patent (No. CN207325107U) comprises a hollow rotating shaft, a rotating head connected with the head of the rotating shaft, a shell sleeved on the periphery of the rotating shaft and a connecting nut screwed at the tail of the shell, wherein a pressure water channel is formed among the connecting nut, the rotating shaft and an inner hole of the rotating head; a damping ring body is arranged in the middle of the rotating shaft, a damping slit is formed between the damping ring body and the inner cavity wall of the shell, two bearings are matched between the rotating shaft and the shell, and the two bearings are positioned on two sides of the damping ring body; the outer side of the bearing is provided with an oil seal, and damping oil is injected between the two oil seals in the inner cavity of the shell; the periphery of the shell is sleeved with a centralizer, the centralizer is provided with a fin extending radially, and a recovery hole is formed in the fin.

However, the above structure has several drawbacks: firstly, as the shell is required to be sleeved with the centralizer and is wrapped in the centralizer, damping oil can be injected into the structure only once, and the assembly operation is complicated and difficult; secondly, the addition and the replacement of the damping oil can be carried out only by disassembling the rotary spray head, and the later maintenance is very troublesome; thirdly, the existing centralizers on the market only have detachable fins, namely the fins are required to be sequentially assembled on corresponding positions of the centralizers during assembly, so that a plurality of parts can appear and the assembly efficiency is low during the assembly process.

The invention content is as follows:

the invention aims to provide a rotary spray head which is convenient for filling and replacing damping oil, effectively reduces the number of parts and simplifies the assembly operation steps.

The invention is realized by the following steps:

the utility model provides a rotary sprayer, includes hollow rotation axis, connects at the shell of rotation axis front end, suit in the shell of rotation axis periphery and fixes the coupling nut in the shell rear end, and the middle part of rotation axis is provided with the damping ring body, is located to be provided with the oil blanket on the rotation axis of damping ring body both sides, and the shell inner chamber forms a packing between two oil blanket and has the oil storage appearance chamber of damping oil, along its circumference equipartition have a plurality of and along the fin of rightting that the shell radially set up on the outer wall of shell, right fin and shell formula structure as an organic whole, set up the oil filler point that intercommunication oil storage appearance chamber on the outer wall of shell, can dismantle on the oil filler point and be.

In foretell rotatory nozzle, be located oil storage holds the intracavity and rotate through bearing and shell on the rotation axis of damping ring body both sides and be connected, all have the oiling clearance between the both sides face of damping ring body and the corresponding bearing, the inner port and one of them oiling clearance of oil filler point are linked together, set up the oil through hole that runs through damping ring body front and back both sides face on the damping ring body.

In the above rotary sprinkler head, the outer peripheral surface of the damping ring body is provided with the spiral groove, the inner port of the oil filler hole is located at the front end portion or the rear end portion of the spiral groove, the depth of the spiral groove is gradually reduced along the direction away from the oil filler hole, and the rotary shaft drives the damping ring body and the spiral groove to rotate so as to guide damping oil to flow from the front end portion or the rear end portion of the spiral groove to the rear end portion or the front end portion.

In foretell rotatory nozzle, set up the seal groove that is linked together with the hole of rotation axis on the rear end face of rotation axis, the internal periphery of seal groove is fixed with the seal ring seat one that has the hole, set up the mounting groove that is linked together with the hole of coupling nut on the preceding terminal surface of coupling nut, the internal periphery of mounting groove is fixed with the seal ring seat two that has the hole, and the rear end face of seal ring seat one is laminated mutually with the preceding terminal surface of seal ring seat two and is formed dynamic seal structure, is provided with the gasket between seal ring seat one and the seal groove or/and seal ring seat two and the mounting groove.

In the above-mentioned rotary nozzle, the first sealing ring seat and the second sealing ring seat are both made of silicon carbide.

In foretell rotatory nozzle, be located set up the circumference constant head tank one that is irregular shape on the rotation axis rear end face of seal groove notch department, seal ring seat is last to be provided with and to be located circumference constant head tank one and with the protruding edge one of circumference constant head tank looks adaptation, be located set up on the coupling nut preceding terminal surface of mounting groove notch department and to be irregular shape circumference constant head tank two, seal ring seat is last to be provided with and to be located circumference constant head tank two and with protruding edge two of circumference constant head tank two phase adaptation.

In the above-mentioned rotary sprayer, sealing rings are respectively arranged between the outer side wall of the first sealing ring seat and the inner side wall of the sealing groove and between the outer side wall of the second sealing ring seat and the inner side wall of the mounting groove.

In the above rotary sprayer, the rotary head includes a rotary base body fixedly connected with the rotary shaft and a flow dividing base body arranged on an inner cavity of the rotary base body, a plurality of first jet holes and second jet holes with different inclination angles from the first jet holes are uniformly distributed on an outer side wall of the rotary base body along the circumferential direction, a first water passing cavity communicated with the first jet holes and a second water passing cavity communicated with the second jet holes are formed between the rotary base body and the flow dividing base body, a flow dividing groove communicated with an inner hole of the rotary shaft is formed in a rear end face of the flow dividing base body, a plurality of first water passing holes communicated with the first water passing cavity and a second water passing hole communicated with the second water passing cavity are formed in a bottom face of the flow dividing groove.

In the above-mentioned rotary sprinkler head, the water inlet ports of the first water through holes and the second water through holes are alternately and equidistantly distributed on a circumference taking the center of the bottom surface of the diversion trench as the center of a circle, the diversion trench is internally provided with a switching body capable of sliding back and forth and rotating circumferentially, a return spring is arranged between the switching body and the bottom surface of the diversion trench, the switching body is provided with drainage holes penetrating through the front end surface and the rear end surface of the switching body and corresponds to the number and the positions of the first water through holes, the front end surface of the switching body is provided with plunger heads corresponding to the number and the positions of the second water through holes, and when the drainage holes are communicated with the first water through holes or the second water through holes, the plunger heads are blocked on the second water through holes or the first.

In foretell rotatory nozzle, the circumference of the switching body has been seted up the circumference swivelling chute on the periphery wall, and the circumference swivelling chute is located the tip of intaking on the switching body rear end face, the port is located the body of switching on the terminal surface go out the water end portion and the kink of intercommunication tip of intaking and the tip of going out water, and high-pressure rivers flow through in proper order and intake tip, kink and play water end portion and exert the effort in order to drive switching body circumferential direction to the kink.

Compared with the prior art, the invention has the outstanding advantages that:

1. according to the invention, the centering fins are directly arranged on the shell, so that the structure of a centering device is omitted, and the centering fins and the shell are of an integrated structure and cannot be disassembled, so that the centering fins do not need to be assembled, the number of parts is effectively simplified, and the assembly efficiency is improved; meanwhile, as the structure of the centralizer is omitted, the oil injection hole is directly formed in the shell, so that damping oil can be conveniently injected or replaced, the operation difficulty of assembly is reduced, and the later maintenance is not required to be carried out any more;

2. the depth of the spiral groove is gradually reduced along the direction far away from the oil filling hole, so that damping oil can be separated from the spiral groove and enter between the outer wall surface of the damping ring body and the inner wall surface of the shell, and the lubricating effect between the outer wall surface of the damping ring body and the inner wall surface of the shell is further improved;

3. the first sealing ring seat and the second sealing ring seat are matched by adopting a dynamic sealing structure, the abrasion loss between the first sealing ring seat and the second sealing ring seat is compensated by virtue of the elastic action of the elastic gasket, and meanwhile, the first sealing ring seat and the second sealing ring seat are both made of silicon carbide, so that the wear resistance is good, and the service life is long.

Description of the drawings:

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is an overall cross-sectional view of the present invention;

FIG. 3 is a perspective view of the rotating shaft of the present invention;

FIG. 4 is a perspective view of the coupling nut of the present invention;

FIG. 5 is a perspective view of a first seal ring seat or a second seal ring seat of the present invention;

FIG. 6 is a perspective view of the shunt base of the present invention;

fig. 7 is a perspective view of a switching body of the present invention.

In the figure: 1. a rotating shaft; 2. rotating the head; 3. a housing; 4. a connecting nut; 5. a damping ring body; 6. oil sealing; 7. righting the fins; 8. an oil filler hole; 9. a bearing; 10. an oil through hole; 11. a helical groove; 12. a sealing groove; 13. a first sealing ring seat; 14. mounting grooves; 15. a second sealing ring seat; 16. an elastic pad; 17. a first circumferential positioning groove; 18. a first convex edge; 19. a second circumferential positioning groove; 20. a convex edge II; 21. a seal ring; 22. rotating the substrate; 23. a shunt substrate; 24. a first injection hole; 25. a second jet hole; 26. a first water passing chamber; 27. a second water passing chamber; 28. a shunt slot; 29. a first water through hole; 30. a water through hole II; 31. a switching body; 32. a return spring; 33. a drainage hole; 34. a plunger head; 35. a circumferential rotation groove; 36. a water inlet end portion; 37. a water outlet end part; 38. a bending section; 39. core supplementing; 40. and an O-shaped ring.

The specific implementation mode is as follows:

the invention will now be further described by way of specific examples, with reference to figures 1 to 7:

the utility model provides a rotatory nozzle, includes hollow rotation axis 1, connects at the shell 3 of 1 periphery of rotation axis 2, suit at the rotation head of 1 front end of rotation axis and fixes the coupling nut 4 at the 3 rear ends of shell, and the middle part of rotation axis 1 is provided with damping ring body 5, is located to be provided with oil blanket 6 on the rotation axis 1 of damping ring body 5 both sides, and 3 inner chambers of shell form one and fill the oil storage that has damping oil between two oil blanket 6 and hold the chamber, along its circumference equipartition have a plurality of and along the fin 7 of rightting of 3 radial settings of shell on the outer wall of shell 3, right fin 7 and 3 formula structures as an organic whole of shell, set up the oil filler point 8 that intercommunication oil storage held the chamber on the outer wall of shell 3, can dismantle on the oil. The plug can be fixed on the oil filling hole 8 in a threaded connection mode, and can also be in a plunger connection mode.

Compared with the prior art, the centering fin 7 is directly arranged on the shell 3, so that a centralizer structure is omitted, the centering fin 7 and the shell 3 are of an integrated structure and cannot be disassembled, the centering fin 7 does not need to be assembled, the number of parts is effectively simplified, and the assembly efficiency is improved; meanwhile, as the structure of the centralizer is omitted, the oil injection hole 8 is directly formed in the shell 3, so that damping oil can be conveniently injected or replaced, the operation difficulty of assembly is reduced, and the later maintenance is not required to be carried out any more.

Further, the rotation connection structure between the rotation shaft 1 and the housing 3 is: the rotating shaft 1 positioned in the oil storage cavity and on two sides of the damping ring body 5 is rotatably connected with the shell 3 through a bearing 9; in this embodiment, only one oil filler hole 8 is provided, and in order to enable each part in the oil storage cavity to be lubricated by damping oil, the set-up position of the oil filler hole 8 is optimized, oil filling gaps are respectively arranged between two side faces of the damping ring body 5 and the corresponding bearings 9, an inner port of the oil filler hole 8 is communicated with one of the oil filling gaps, and the damping ring body 5 is provided with an oil through hole 10 which penetrates through the front side face and the rear side face of the damping ring body 5.

Meanwhile, in order to lubricate the space between the outer wall surface of the damping ring body 5 and the inner wall surface of the outer shell 3, the outer peripheral surface of the damping ring body 5 is provided with a spiral groove 11, the inner port of the oil filling hole 8 is positioned at the front end part or the rear end part of the spiral groove 11, and in order to further improve the lubricating effect between the outer wall surface of the damping ring body 5 and the inner wall surface of the outer shell 3, the damping oil is enabled to be separated from the spiral groove 11 and enter the space between the outer wall surface of the damping ring body 5 and the inner wall surface of the outer shell 3, the depth of the spiral groove 11 is gradually reduced along the direction far away from the oil filling hole 8, and the damping ring body 5 and the spiral groove 11 are driven by the rotating shaft 1 to rotate so as to guide the damping oil to flow from the front end.

Furthermore, the inner hole of the coupling nut 4 is communicated with the inner hole of the rotating shaft 1, and in order to ensure the sealing performance between the two, the specific sealing matching structure is as follows: a sealing groove 12 communicated with an inner hole of the rotating shaft 1 is formed in the rear end face of the rotating shaft 1, a first sealing ring seat 13 with an inner hole is fixed in the sealing groove 12 in the circumferential direction, a mounting groove 14 communicated with the inner hole of the connecting nut 4 is formed in the front end face of the connecting nut 4, a second sealing ring seat 15 with an inner hole is fixed in the mounting groove 14 in the circumferential direction, and the rear end face of the first sealing ring seat 13 is attached to the front end face of the second sealing ring seat 15 to form a movable sealing structure; meanwhile, after the sealing ring seat is operated for a long time, the first sealing ring seat 13 and the second sealing ring seat 15 are inevitably worn, so that the dynamic sealing performance between the first sealing ring seat 13 and the second sealing ring seat 15 is reduced, and therefore, in order to compensate the wear loss between the first sealing ring seat 13 and the second sealing ring seat 15, an elastic gasket 16 is arranged between the first sealing ring seat 13 and the sealing groove 12 or/and between the second sealing ring seat 15 and the mounting groove 14.

Meanwhile, in order to enable the first sealing ring seat 13 and the second sealing ring seat 15 to have good wear-resisting characteristics, the first sealing ring seat 13 and the second sealing ring seat 15 are both made of silicon carbide.

Furthermore, in order to enable the first seal ring seat 13 to be fixed in the circumferential direction of the seal groove 12, the specific matching manner between the first seal ring seat 13 and the seal groove 12 is as follows: a first irregular-shaped circumferential positioning groove 17 is formed in the rear end face of the rotating shaft 1 at the groove opening of the sealing groove 12, and a first convex edge 18 which is located in the first circumferential positioning groove 17 and matched with the first circumferential positioning groove 17 is formed in the first sealing ring seat 13; in the same way, in order to make the second sealing ring seat 15 circumferentially fixed in the mounting groove 14, the specific matching mode between the second sealing ring seat 15 and the mounting groove 14 is as follows: and a second circumferential positioning groove 19 in an irregular shape is formed in the front end face of the connecting nut 4 at the groove opening of the mounting groove 14, and a second convex edge 20 which is positioned in the second circumferential positioning groove 19 and is matched with the second circumferential positioning groove 19 is arranged on the second sealing ring seat 15. In addition, in the present embodiment, the elastic gaskets 16 are respectively disposed between the first circumferential positioning groove 17 and the first ledge 18, and between the second circumferential positioning groove 19 and the second ledge 20.

In addition, in order to ensure the sealing performance between the outer wall surface of the first seal ring seat 13 and the inner wall surface of the seal groove 12 and between the outer wall surface of the second seal ring seat 15 and the inner wall surface of the mounting groove 14, seal rings 21 are respectively arranged between the outer side wall of the first seal ring seat 13 and the inner wall surface of the seal groove 12 and between the outer side wall of the second seal ring seat 15 and the inner wall surface of the mounting groove 14.

In addition, the specific structure adopted by the rotating head 2 of the present invention is as follows: the rotating head 2 comprises a rotating base body 22 fixedly connected with the rotating shaft 1 and a shunting base body 23 arranged on an inner cavity of the rotating base body 22, a plurality of first spraying holes 24 and second spraying holes 25 with different inclination angles with the first spraying holes 24 are uniformly distributed on the outer side wall of the rotating base body 22 along the circumferential direction, a first water passing cavity 26 communicated with the first spraying holes 24 and a second water passing cavity 27 communicated with the second spraying holes 25 are formed between the rotating base body 22 and the shunting base body 23, a shunting groove 28 communicated with an inner hole of the rotating shaft 1 is formed in the rear end face of the shunting base body 23, a plurality of first water passing holes 29 with water outlet ports communicated with the first water passing cavity 26 and a second water passing hole 30 with water outlet ports communicated with the second water passing cavity 27 are formed in the groove bottom face of the shunting groove 28. Namely, two different injection water paths are formed between the rotating base body 22 and the flow dividing base body 23 and are injected outwards through the first injection hole 24 and the second injection hole 25 which have different inclination angles.

Wherein, the fixed connection structure between the rotating base 22 and the rotating shaft 1 and the shunting base 23 is as follows: a complementary core 39 is fixedly sleeved on the corresponding end of the rotating shaft 1, the rear end port of the rotating base body 22 is sleeved on the front end of the complementary core 39, the front end face of the complementary core 39 is abutted against the rear end face of the shunting base body 23, and the front end face of the shunting base body 23 is abutted against the inner end face of the rotating base body 22. At the same time, an O-ring 40 is provided between the outer sidewall of the flow splitting base 23 and the inner sidewall of the rotating base 22 to ensure a seal between the flow splitting base 23 and the rotating base 22.

In order to enable the first injection hole 24 and the second injection hole 25 to perform independent injection, the water inlet ports of the first water through hole 29 and the second water through hole 30 are alternately and equidistantly distributed on the circumference taking the center of the bottom surface of the diversion groove 28 as the center of a circle, a switching body 31 capable of sliding back and forth and rotating circumferentially is arranged in the diversion groove 28, a return spring 32 is arranged between the switching body 31 and the bottom surface of the diversion groove 28, the switching body 31 is provided with drainage holes 33 penetrating through the front end surface and the rear end surface thereof and corresponding to the number and the positions of the first water through holes 29, the front end surface of the switching body 31 is provided with plunger heads 34 corresponding to the number and the positions of the second water through holes 30, wherein, the switch body 31 can overcome the elastic force of the return spring 32 under the water pressure of the water jet, when the drainage hole 33 is communicated with the first water through hole 29 and the plunger head 34 is blocked at the second water through hole 30, the purpose that the first injection hole 24 is independently injected outwards can be achieved; when the drainage hole 33 is communicated with the second water through hole 30 and the plunger head 34 is blocked at the first water through hole 29, the aim of independently spraying the second spray hole 25 outwards is fulfilled.

In order to control the circumferential direction of the switching body 31, in order to reach the independent injection between the automatic switching jet hole 24 and the jet hole two 25, the circumferential direction rotary groove 35 has been seted up on the peripheral wall of the switching body 31, the circumferential direction rotary groove 35 is located the water inlet end portion 36 on the switching body 31 rear end face, the water outlet end portion 37 on the end face before the switching body 31 is located to the port, and the kink 38 of intercommunication water inlet end portion 36 and water outlet end portion 37, high-pressure water flows through water inlet end portion 36 in proper order, kink 38 and water outlet end portion 37 and applys the effort in order to drive the switching body 31 circumferential direction to kink 38.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.